Emergency crews say a spike in synthetic marijuana usage led to at least 20 people passing out and seizing in the Tulsa area Tuesday.

47-year-old Abdurrahim Rahim works at the store and was arrested.

Police also arrested Thomas Collishaw for possession, public intoxication and larceny.

TULSA, Oklahoma -

Police said a spike in synthetic marijuana usage led to at least 20 people passing out and three arrested in Tulsa Tuesday.

Nine of those patients collapsed downtown, outside of the Iron Gate Soup Kitchen.

Police said they've arrested 29-year-old Bamf Hunter, believed to be the dealer, for possession with intent to distribute. Also arrested was Thomas Colishaw, 21, for possession, public intoxication and larceny.

Late Tuesday, police served a warrant at the Phillips 66 convenience store at 5425 East 11th Street where officers said the two men bought the K2. They say 47-year-old Abdur Rahim who works at the store and was also arrested.

EMSA took most of the those affected were taken to Tulsa hospitals with what police called one of the most toxic forms of synthetic marijuana.

During a search of the gas station, police said they seized a massive amount of synthetic substance and believe their investigation links the store with the drugs distributed in downtown Tulsa.

Tuesday, Alvin Guess watched as people he knew - some of them his friends - succumbed to the synthetic marijuana.

"I know a lot of these guys, they're just hooked on that K2. It's just a bad batch that came out today," he said.

Police officers said they took one man into custody, whom they believe could have supplied that bad batch.

They found him along Katy Trail just west of the Tulsa County Jail. They said he had 15 to 20 grams of what they call “Pink Bubble Gum” - one of the most toxic forms of K2, on his person.

Kelli Bruer with EMSA said, "We don't know when it'll stop. We don't know the substance or the product that's out there that's causing it, and how much of it's out there."